768138101 has 2 divisors, whose sum is σ = 768138102. Its totient is φ = 768138100.

The previous prime is 768138097. The next prime is 768138131. The reversal of 768138101 is 101831867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479172100 + 288966001 = 21890^2 + 16999^2 .

It is a cyclic number.

It is not a de Polignac number, because 768138101 - 2² = 768138097 is a prime.

It is a super-2 number, since 2×768138101² = 1180072284415772402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768138131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384069050 + 384069051.

It is an arithmetic number, because the mean of its divisors is an integer number (384069051).

Almost surely, 2^768138101 is an apocalyptic number.

It is an amenable number.

768138101 is a deficient number, since it is larger than the sum of its proper divisors (1).

768138101 is an equidigital number, since it uses as much as digits as its factorization.

768138101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 768138101 is about 27715.3044543985. The cubic root of 768138101 is about 915.8262817881.

Adding to 768138101 its reverse (101831867), we get a palindrome (869969968).

The spelling of 768138101 in words is "seven hundred sixty-eight million, one hundred thirty-eight thousand, one hundred one".